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Rev limiter

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3.2K views 9 replies 6 participants last post by  jjvw  
#1 · (Edited by Moderator)
Need help got a 06 Rubicon 4.0 manual transmission when its cold the rev limiter kicks in when driving after it gets warm and I shut it off and restart it revs like normal.
 
#5 ·
I highly doubt he's actually getting into the rev limiter... I don't think that would warrant a post on here with a question...

I suspect what's happening is is engine is down on power or for some reason limiting itself where it shouldn't be...
 
#10 ·
Here...


... From the FSM, referring to the reset button… “Holding this switch depressed while turning the ignition switch from the Off position to the On position will initiate the EMIC self-diagnostic actuator test.

To get the trouble codes you need to turn the key without starting on-off-on-off-on & read the code(s) if any, in the odometer display. It will say done when finished or in some early yrs using 2 digit codes say 55. For those “12” may come up but disregard that.

This works on most yrs but not all including some around 2000.